The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 1984
Filed:
Aug. 17, 1982
Udo Hafner, Lorch, DE;
Harro Herth, Vaihingen/Enz, DE;
Wolfgang Kienzle, Schwieberdingen, DE;
Heinrich Knapp, Leonberg, DE;
Rudolf Krauss, Stuttgart, DE;
Manfred Lembke, Gerlingen, DE;
Werner Paschke, Schwieberdingen, DE;
Rudolf Sauer, Benningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electromagnetically actuatable valve, especially an injection valve for fuel injection systems which supply internal combustion engines with fuel, is proposed in which the fuel injection valve encompasses a valve chamber and a core upon which a magnetic coil is mounted by means of a carrier body. Fuel supply openings discharge into a flow passage provided around the magnetic coil. Vapor bubbles dissolved in the fuel may be flushed out of the flow passage via a first restriction into fuel return openings which communicate with a fuel return line. On the other hand, the fuel may flow from the flow passage into the collecting chamber which houses a valve component and a valve seat. Vapor bubbles which may appear near the valve component may be flushed out via a second restriction which is provided in the interior of a core to reach the fuel return openings. Thus, disturbances with fuel injection, especially during the 'hot start' of the internal combustion engine, are avoided.